import type {App} from 'vue'
import {createI18n} from 'vue-i18n'
import {useLocaleStoreWithOut} from '@/store/modules/locale'
import type {I18n, I18nOptions} from 'vue-i18n'
import {setHtmlPageLang} from './helper'

export let i18n: ReturnType<typeof createI18n>

const createI18nOptions = async (): Promise<I18nOptions> => {
    const localeStore = useLocaleStoreWithOut()
    const locale = localeStore.getCurrentLocale
    const localeMap = localeStore.getLocaleMap
    const defaultLocal = await import(`../../locales/${locale.lang}.ts`)
    const message = defaultLocal.default ?? {}

    setHtmlPageLang(locale.lang)

    localeStore.setCurrentLocale({
        lang: locale.lang
        // elLocale: elLocal
    })

    return {
        legacy: false,
        locale: locale.lang,
        fallbackLocale: locale.lang,
        messages: {
            [locale.lang]: message
        },
        availableLocales: localeMap.map((v) => v.lang),
        sync: true,
        silentTranslationWarn: true,
        missingWarn: false,
        silentFallbackWarn: true
    }
}

export const setupI18n = async (app: App) => {
    const options = await createI18nOptions()
    i18n = createI18n(options) as I18n
    app.use(i18n)
}
